Aqueous ink for inkjet recording
An inkjet recording, water-based technology, used in inks, applications, household appliances, etc., can solve problems such as work environment deterioration and safety
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[0208] In the following manufacture examples, preparation examples, examples, and comparative examples, "parts" and "%" are "parts by mass" and "% by mass" unless otherwise specified. The measurement of the physical properties of the polymer and the like was carried out by the following methods.
[0209] (1) Determination of the weight average molecular weight of the polymer
[0210] Phosphoric acid and lithium bromide were dissolved in N,N-dimethylformamide so that the concentrations were 60mmol / L and 50mmol / L, respectively, and the obtained solution was used as an eluent, and gel chromatography [Tosoh Corporation GPC equipment (HLC-8320GPC) manufactured by Tosoh Co., Ltd. (TSKgel SuperAWM-H, TSKgel SuperAW3000, TSKgel Guardcolum Super AW-H), flow rate: 0.5mL / min], using a monodisperse polymer with known molecular weight Styrene kit [PStQuick B (F-550, F-80, F-10, F-1, A-1000), PstQuick C (F-288, F-40, F-4, A-5000, A- 500), manufactured by Tosoh Co., Ltd.] was measured as a...
manufacture example 1～2
[0223] Production examples 1 to 2 (production of water-insoluble vinyl polymers P-1 and P-2)
[0224] Into the reaction vessel with two dropping funnels 1 and 2, add and mix the monomers, solvents, and polymer chain transfer agents shown in "Initial Addition Monomer Solution" in Table 1 or 2. After nitrogen replacement, the initial addition monomer solution.
[0225] On the other hand, mix the monomers, solvents, polymerization initiators, and chain transfer agents shown in "dropping monomer solution 1" in Table 1 or 2 to obtain dropping monomer solution 1, and add it to the dropping funnel 1 , for nitrogen replacement.
[0226] In addition, the monomer, solvent, polymerization initiator, and polymerization chain transfer agent shown in "dropping monomer solution 2" in Table 1 were mixed to obtain dropping monomer solution 2, which was added to the dropping funnel 2 and replaced with nitrogen. .
[0227] Under a nitrogen atmosphere, while stirring the initially added monome...
preparation example A1
[0240] Preparation Example A1 (Preparation of Aqueous Dispersion 1 of Pigment-Containing Polymer Particles)
[0241] (1) Process 1 (pigment dispersion process)
[0242] In a container with an inner volume of 2 L, 42.9 g of vinyl polymer P-1 was dissolved in 126.2 g of methyl ethyl ketone (MEK), and 5N aqueous sodium hydroxide solution was added thereto to neutralize 60 mol % of the acid value of the polymer. Then, 379.5 g of ion-exchanged water was dripped over 30 minutes, and it stirred and mixed for 15 minutes at 10 degreeC or more and 15 degreeC or less using the dispersion blade at 1,500 r / min.
[0243] Next, 100 g of carbon black (manufactured by Cabot Corporation, Monarch 717) was added, and stirred and mixed at 10° C. to 15° C. using a dispersion blade at 6,500 r / min for 2 hours to obtain a predispersion.
[0244] The obtained predispersion was filtered through 200 mesh, diluted with 31.1 g of ion-exchanged water, and subjected to a pressure of 150 MPa using a microflu...
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